HI：
Recently，we calculate the angle between receiver and sender based on the SimpleLink CC2640R2 SDK (2.30.00.28)，using RAW IQ datas sampling by two antennas（A1.1 and A1.2）。
Results in the blow picture:
red line: angle resluts；
blue line: the phase drift across one antenna repetition;
green line: Correct for angle drift / ADC sampling frequency error;
from the picture, we find that the datas from 0 to 10 is correct, but 11-15 may be error ，just as the code segment only use the 0 - 7 IQ data，not 8 - 16：
But the document（http://dev.ti.com/tirex/content/simplelink_cc2640r2_sdk_2_20_00_49/docs/blestack/ble_user_guide/html/localization/index.html#angle-of-arrival）：
tell us：we need discard I/Q samples from 0 to 7。who can explain this question?
PS: Sorry, I am not good at English
